Ewc 4 Size (in)
We offer over 70 EWC HVAC products, including Bypass Dampers, Damper Controls & Accessories, Rectangular Dampers, Round Dampers, and Zoning Panels.
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![EWC Controls 4 URD 4 Inch Round Motorized Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sm_07e7adb7-d68b-443d-b241-d537040f9794_medium.gif?v=1720094307)
4 URD | 4 Inch Round Motorized Damper | EWC Controls
Brand: EWC Controls
SKU: 4 URD
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![EWC Controls 4 RSD 4 Inch Round Motorized Spring Return Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/rsd_b6e0ec1f-ccd0-47a3-84e1-318005deb338_medium.png?v=1720094311)
4 RSD | 4 Inch Round Motorized Spring Return Damper | EWC Controls
Brand: EWC Controls
SKU: 4 RSD
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![EWC Controls 4 SID 4 Inch Slip In Retrofit Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/sid1_5ee89470-427f-4c28-bae0-c567eabe4fe9_medium.gif?v=1713902470)
4 SID | 4 Inch Slip In Retrofit Damper | EWC Controls
Brand: EWC Controls
SKU: 4 SID
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![EWC Controls 4 SID-15S 4 SID SLIP IN MA-15S DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/sid1_61c50968-fdef-416f-b37d-1a6878dc296e_medium.gif?v=1720038864)
4 SID-15S | 4 SID SLIP IN MA-15S DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 4 SID-15S
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![EWC Controls 4 URD-SRE120 NC 4 URD-SRE120 120V ROUND SPRING RETURN DAMPER – NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_4f9cd851-bf37-4d43-a028-c981c7725a4f_medium.gif?v=1720038865)
4 URD-SRE120 NC | 4 URD-SRE120 120V ROUND SPRING RETURN DAMPER – NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 4 URD-SRE120 NC
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![EWC Controls 4 URD-SRE120 NO 4 URD-SRE120 120V ROUND SPRING RETURN DAMPER – NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_9248dbcd-70cc-44f6-a95b-0e26cfc9f73f_medium.gif?v=1720038858)
4 URD-SRE120 NO | 4 URD-SRE120 120V ROUND SPRING RETURN DAMPER – NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 4 URD-SRE120 NO
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![EWC Controls 4 URD-SRE120 N.C. 4 Inch 120V Round Motorized Spring Return Damper Normally Closed | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_d4487fa4-d23e-4572-bd74-1897aa348b0a_medium.gif?v=1720000513)
4 URD-SRE120 N.C. | 4 Inch 120V Round Motorized Spring Return Damper Normally Closed | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 4 URD-SRE120 N.C.
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![EWC Controls 4 URD-SRE120 N.O. 4 Inch 120V Round Motorized Spring Return Damper Normally Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_0c5a3f36-3626-4367-b848-30d9eb72acb1_medium.gif?v=1720094293)
4 URD-SRE120 N.O. | 4 Inch 120V Round Motorized Spring Return Damper Normally Open | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 4 URD-SRE120 N.O.
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